True Wind Speed and True Wind Direction only appear on a GPS tracking page being updated by a DataHub connected to an NMEA network with instruments on. If the DataHub is connected, and it is the only source of a GPS position for your boat, and TWS/TWD are not appearing on your tracking page, please see this article for more information:
Multiple devices updating your GPS tracking page
If you have more than one device updating your PredictWind GPS tracking page, this may affect the display of True Wind Speed (TWS) and True Wind Direction (TWD).
For example, you may have a DataHub uploading your GPS position along with TWS and TWD data, while another tracking source, such as AIS, Iridium GO! or another GPS tracking device, is also updating your position.
Not all tracking methods include wind information. AIS tracking and Iridium GO! tracking via SMS, for example, do not report TWS and TWD. When these devices upload a new position, the latest tracking update may overwrite the information previously uploaded by the DataHub, resulting in TWS and TWD no longer being displayed on your tracking page.
How to resolve this
We recommend using the DataHub as your primary GPS tracking source, as it can upload both your GPS position and wind data when connected to your boat's instruments.
If you are using another tracking method as a backup, you do not necessarily need to disable it.
Instead, consider reducing the reporting frequency of your secondary tracking device, so the DataHub remains your primary source of tracking updates.
Note: If multiple tracking sources remain active, TWS and TWD may still temporarily disappear when a position update is received from a device that does not include wind data.
How to reduce the GPS tracking frequency on your Iridium GO!
If you use an Iridium GO! as a backup tracking device, you can reduce how frequently it uploads your GPS position without disabling tracking completely.
Turn on Airplane/Flight Mode on your mobile device and ensure Bluetooth is turned off.
Connect to the Iridium GO! Wi-Fi.
Open the Iridium GO! App and log in.
Navigate to Settings > Track. Make sure you select Track from the Settings menu, not from the App's homepage.
Select a longer interval from the Tracking Frequency drop-down menu.
Tap Save to apply your changes.
This allows you to keep your Iridium GO! tracking active as a backup while reducing the chance of its position updates interfering with the TWS and TWD information uploaded by your DataHub.
Consider buying a DataHub to share TWS/TWD on your tracking page
Please click here if you don't have a DataHub and wish to buy one to share your TWS/TWD with family and friends on your GPS tracking page.